/*
 * Created on 27-Apr-2006
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package com.aelitis.azureus.core.networkmanager;

import org.gudy.azureus2.core3.util.Debug;

public class EventWaiter {
    private boolean sleeping;
    private boolean wakeup_outstanding;

    public EventWaiter() {
    }

    public boolean waitForEvent(long timeout) {
        synchronized (this) {

            if (wakeup_outstanding) {

                wakeup_outstanding = false;

                return (false);
            }

            try {
                sleeping = true;

                this.wait(timeout);

            } catch (Throwable e) {

                Debug.printStackTrace(e);

            } finally {

                sleeping = false;
            }

            return (true);
        }
    }

    public void eventOccurred() {
        synchronized (this) {

            if (!sleeping) {

                wakeup_outstanding = true;

            } else {

                this.notify();
            }
        }
    }
}
